Apparatus for assembling of angle plates on the flanges of ventilation ducts

ABSTRACT

An apparatus for placement of angle plates in transverse ventilation duct flanges comprising a blocking device attached to a platen to block the ventilation duct on the platen, a feeding device to transport angle plates including a slider, said slider being stably joined to a piston-rod of a cylinder to move freely along a guide bar, a supply hopper to house the angle plates located above the feeding device, a fastening device to fasten angle plates in flanges of the ventilation ducts and a clamping device to clamp the flange edges on the angle plates. The feeding device comprises a movable double arm carrier located on a base plate. The guide bar is positioned in the lower part of the base plate and on the slider working plane. The base plate has a port shaped like an angle plate and an oblong hole. The slider has an oblong slot and a socket. A carrying pin is joined to the carrier extending through the oblong hole into the oblong slot, so that the carrier is shifted by the slider after each of slider movements, the slider working plane has a furrow whose width is smaller than the arms span of angle plates. A guide is secured to the front part of the base plate above the furrow, such that upon backward movement of the carrier, the lowest angle plate stacked in the supply hopper is caught by the arms of the carrier and transported to the port. The angle plate drops through the port onto the slider working plane and upon forward movement of the slider, the socket reaches the corner of the angle plate so as to move the angle plate on the slider working plane towards the ventilation duct, whereby the corner of the angle plate reaches the guide causing the rising of angle plate arms.

BACKGROUND OF THE INVENTION

The subject of this invention is an apparatus for placement of angleplates in ventilation duct flanges.

The invention is known in the United States under the U.S. Pat. No.5,283,944 as an apparatus for placement of angle plates in transverseduct flanges, comprising a base plate which supports the ventilationduct, a blocking device to block the duct into position, a feedingdevice to move the angle plate until it reaches the corner of blockedventilation duct, a fastening device to mate the angle plate to the ductflange. The feeding device consists of a slider to feed the lowest angleplate from the supply hopper towards the ventilation duct. Angle platesfed from the supply hopper must be shaped in such a way as to movefreely towards the ventilation duct.

SUMMARY OF THE INVENTION

The apparatus for placement of angle plates in ventilation duct flangesconsists of: a blocking device to block the ventilation duct on aplaten, a feeding device of angle plates including a slider, said sliderbeing stably joined to a piston-rod of the cylinder to move to-and-froalong a guide bar, a supply hopper of angle plates located above saidfeeding device, a fastening device to fasten angle plates in flanges ofsaid ventilation ducts and a clamping device to clamp the flange edgeson said angle plate. The feeding device of angle plates comprises amovable double arm carrier located on the base plate. Carrier arms haveoval holes with stops secured to said base plate. Oval holes of thecarrier and the oblong hole in the base plate have oblong axes parallelto the direction of slider movement. Carrier arms end with shapedclamps, whereas internal parts of carrier arms have the same shape asthe external part of said angle plate being a little larger than it. Thesupply hopper of angle plates has a shape of an angle bar with armsseparated a little more than 90° and with edges outwardly bent out twiceas seen from above. Angle plates stacked in the supply hopper arefastened on the carrier during the full placement cycle.

The guide bar is located in the lower part of the base plate and in theworking plane as the slider. The base plate has a port shaped like anangle plate and also an oblong hole. The slider has an oblong slot and asocket. A pin which is fixed to the carrier extends through the oblonghole into the oblong slot in such a way that the carrier is shifted bythe slider in the last stage of each movement. The working plane of theslider has a furrow whose span is slightly narrower than that of theangle plate. The guide is secured to the front of the base plate abovethe furrow and with the backward movement of the carrier, the lowestangle plate in the supply hopper is caught by carrier arms and pushedforward. As the angle plate moves forward, it drops through the port andonto the slider working plane. Forward movement of the slider pushes thesocket to reach the corner of the angle plate and transports the angleplate towards the ventilation duct. The corner of the angle platereaches the guide, causing the arms of the angle plate to rise.

This apparatus is universal. It may be used with differently shapedangle plates because the feed of angle plates from the hopper isachieved by an appropriately shaped carrier design. This apparatusoffers accurate and solid attachment of angle plates in ventilation ductflanges.

BRIEF DESCRIPTION OF THE DRAWINGS

The subject of this invention is presented on drawings, where FIG.1--side view, FIG. 2--top view, FIG. 3--top view of a carrier in extremepositions of the slider, FIG. 4--cross-section of a carrier in a sliderfront position.

DETAILED DESCRIPTION

The apparatus comprises the blocking device 2 of the ventilation duct 3installed on the platen 1, a feeding device 4 of the angle plate 5, afastening device 6 to fasten the angle plate 5 in the ventilation duct 3flange 7 and a clamping device 8 to clamp the ventilation duct 3 flange7 on angle plate 5 edges. The feeding device 4 of the angle plate 5comprises a double arm carrier 9 and a slider 10. There is a supplyhopper 11 of angle plates 5 over the carrier 9. The slider 10 slidesalong the guide bar 25 located in the lower part of the base plate 19and on the slider 10 working plane 14. The slider 10 is attached to thepiston rod 15 of the cylinder 16. The carrier 9 is located on the baseplate 19. The the slider 10 working plane 14 has a furrow 26. There is aport 23 and an oblong hole 21 on the base plate 19. In the front part ofthe base plate 19 the fixed guide 24 is located over the furrow 26 inthe slider 10 working plane 14. Carrier 9 arms have oval holes 17 withstops 18 secured to the base plate 19. There is a carrying pin 20 fixedto the central part of the carrier 9. The carrying pin 20 is placed inan oblong hole 21 of the base plate and in an oblong slot 12 of theslider 10. The carrier 9 arms end with clamps 22.

The operation of the apparatus according to the invention starts byfilling the supply hopper 11 with angle plates 5 and placing theventilation duct 3 on the platen 1. When the apparatus is switched on,the blocking device 2 sets up the ventilation duct 3 in a properposition and blocks it for the entire time of the placement cycle. Whena ventilation duct is blocked, the feeding device 4 is activated. Thepiston rod 15 of the cylinder 16 secured to the slider 10 starts movingbackwards, in example away from the ventilation duct 3. When the frontedge of the slider 10 slot 12 reaches the carrying pin 20 secured to thecarrier 9, the slider 10 and the carrier 9 start moving backwards at thesame moment. The clamps 22 of carrier 9 arms catch the lowest angleplate 5 stacked in the supply hopper 11 and move it towards the baseplate 19 port 23. The angle plate 5 drops down through the port 23 tothe working plane 14 of the slider 10 until its corner reaches theslider 10 socket 13. The piston rod 15 of the cylinder 16 changes itsdirection at the same time. The slider 10 moves the angle plate 5 on theworking plane 14 towards the ventilation duct 3. The angle plate 5 istransported under the guide 24 which is installed in the lower part ofthe base plate 19 over the furrow 26 on the slider 10 working plane 14.The guide 24 presses the angle plate 5 corner causing its arms to rise.When the back edge of the slider 10 slot 12 reaches the carrying pin 20of the carrier 9, the carrier 9 and the slider 10 commence to moveforward. The carrier 9 advances under the angle plate 5 supply hopper 11and at the same time the slider 10 places the angle plate 5 with theraised arms over the channel bar flanges 7 of ventilation ducts 3. Thefastening device 6 is switched on and angle plate 5 arms are pressedinto the channel bar flanges 7 of the ventilation duct 3. The finalstage of angle plate 5 placement is to activate two clamping devices 8which clamp the ventilation duct 3 flanges 7 on angle plate 5 edges.

What is claimed is:
 1. An apparatus for placement of angle plates (5)including arms in transverse ventilation duct (3) flanges (7) saidapparatus comprising:a blocking device (2) attached to a platen, saidblocking device to secure the ventilation duct (3) on the platen, afeeding device (4) including a slider (10), said feeding device totransport said angle plates, said slider (10) being stably joined to apiston-rod (15) of a cylinder (16) to move freely along a guide bar(25), a supply hopper (11) to house said angle plates (5) located abovesaid feeding device (4), a fastening device (6) to fasten said angleplates (5) in said flanges (7) of said ventilation ducts (3) and aclamping device (8) to clamp the flange (7) edges on said angle plates(5), characterized bysaid feeding device (4) to move said angle plates(5) comprising a movable double arm carrier (9) located on a base plate(19), said guide bar (25) being located in a lower part of the baseplate (19) and on a working plane (14) of the slider (10), said baseplate (19) having a port (23) shaped substantially as one of said angleplates (5) and an oblong hole (21), said slider (10) having an oblongslot (12) and a socket (13), a carrying pin (20) being joined to saidcarrier (9) and extending through the oblong hole (21) into the oblongslot (12), so that the carrier (9) is shifted by said slider (10) aftereach movement of said slider (10), said slider (10) working plane (14)having a furrow (26) whose width is smaller than a span of said arms ofsaid angle plates (5), a guide (24) being secured to a front part ofsaid base plate (19) above the furrow (26), such thatupon backwardmovement of said carrier (9), the lowest angle plate (5) stacked in thesupply hopper (11) is caught by the arms of said carrier (9) andtransported to said port (23), whereupon a respective angle plate (5)drops through the port (23) onto the slider (10) working plane (14), andupon forward movement of said slider (10), the socket (13) reaches thecorner of the angle plate (5) so as to move the angle plate (5) on theslider (10) working plane (14) towards the ventilation duct (3), wherebythe corner of the angle plate (5) reaches said guide (24) therebycausing the rising of said angle plate (5) arms.
 2. An apparatusaccording to claim 1, characterised by said carrier (9) arms having ovalholes (17) at ends thereof with stops (18) secured to said base plate(19).
 3. An apparatus according to claim 2, characterised by saidcarrier (9) arms ending with shaped clamps (22), said clamps (22) havinginternal parts of said carrier (9) arms shaped like an external part ofsaid angle plate (5).
 4. An apparatus according to claim 2,characterised by said holes in said carrier (9) arms and said base plate(19) having oblong axes parallel to the direction of slider (10)movement.
 5. An apparatus according to claim 1, characterised by saidsupply hopper (11) of the angle plates (5) having an angular shape witharms separated a little more than 90° and with edges bent out.
 6. Anapparatus according to claim 1, characterised by said angle plates (5)stacked in said supply hopper (11) being supported on said carrier (9)during a full cycle of said apparatus.